Security/libsecurity_transform/lib/SecDigestTransform.cpp

   1 #include "SecDigestTransform.h"
   2 #include "Digest.h"
   3
   4
   5
   6 const CFStringRef kSecDigestMD2 = CFSTR("MD2 Digest"),
   7                                   kSecDigestMD4 = CFSTR("MD4 Digest"),
   8                                   kSecDigestMD5 = CFSTR("MD5 Digest"),
   9                                   kSecDigestSHA1 = CFSTR("SHA1 Digest"),
  10                                   kSecDigestSHA2 = CFSTR("SHA2 Digest Family"),
  11                                   kSecDigestHMACMD5 = CFSTR("HMAC-MD5"),
  12                                   kSecDigestHMACSHA1 = CFSTR("HMAC-SHA1"),
  13                                   kSecDigestHMACSHA2 = CFSTR("HMAC-SHA2 Digest Family");
  14
  15 const CFStringRef kSecDigestTypeAttribute = CFSTR("Digest Type"),
  16                                   kSecDigestLengthAttribute = CFSTR("Digest Length"),
  17                                   kSecDigestHMACKeyAttribute = CFSTR("HMAC Key");
  18
  19 SecTransformRef SecDigestTransformCreate(CFTypeRef digestType,
  20                                                                                  CFIndex digestLength,
  21                                                                                  CFErrorRef* error
  22                                                                                  )
  23 {
  24         SecTransformRef tr = DigestTransform::Make();
  25         DigestTransform* dt = (DigestTransform*) CoreFoundationHolder::ObjectFromCFType(tr);
  26
  27         CFErrorRef result = dt->Setup(digestType, digestLength);
  28         if (result != NULL)
  29         {
  30                 // an error occurred
  31                 CFRelease(tr);
  32
  33                 if (error)
  34                 {
  35                         *error = result;
  36                 }
  37
  38                 return NULL;
  39         }
  40
  41         return tr;
  42 }
  43
  44
  45
  46 CFTypeID SecDigestTransformGetTypeID()
  47 {
  48         return DigestTransform::GetCFTypeID();
  49 }